Biological Evidence in Forensic Science

Biological Evidence in Forensic Science Quiz Crafted by –

Taniya Jaiswal

Team Member

Sherlock Institute of Forensic Science India Pvt. Ltd, New Delhi

Introduction to Biological Evidence in Forensic Science

Biological evidence is a very broad category of evidence. It is a piece of physical evidence classified based on the nature of the evidence. The word biological derived from the word biology, referring to a living organism where else evidence is defined as something legally submitted to a competent tribunal as a means of ascertaining the truth of any alleged matter of fact under investigation before it or information that is used in a court of law to prove something. Therefore, biological evidence can be referred to as biological materials or substances such as hair, tissue, bones, teeth, blood, semen, or other bodily fluids including items containing biological material and used to corroborate and provide a means of proofing statements or claims in trials.

Let's look at the questions and their answers

Ques 1. In Starch-Iodine test, the starch turns in the following colour on addition of Iodine:

a) Purple

b) Blue

c) Green

d) Pink

Answer - b) Blue

Ques 2. One of the following test is used to determine the species of origin from bloodstain:

a) Acid Phosphate

b) Teichmann

c) Fluorescence

d) Immunoprecipitation

Answer – d) Immunoprecipitation

Ques 3. Which of these tests is used to check for the presence of antibodies in blood-stained material?

a) Lattes Crust Test

b) Ring Precipitin Test

c) Takayama Test

d) Teichmann Test

Answer – a) Lattes Crust Test

Ques 4. Cherry red discolouration of blood is due to

a) Oxyhaemoglobin

b) Red haemoglobin

c) Carboxyhemoglobin

d) Cyanometh-haemoglobin

Answer – a) Carboxyhemoglobin

Ques 5. The shapes of the spatter stains of blood are affected by the __________ of impact.

a) Length

b) Breadth

c) Width

d) Angle

Answer – d) Angle

Ques 6. Richest concentration of Choline in the spermatic fluid was determined by

a) Jhonston (1896)

b) Davis and Wilson (1974)

c) Fletcher et al (1935)

d) Florence (1886)

Answer – c) Fletcher et al (1935)

Ques 7. The most common means of identification of faeces sample is by the detection of

a) Ptylin

b) Glycogen

c) Urobilinogen

d) Creatine 

Answer – c) Urobilinogen

Ques 8. Apart from humans, P30 in seminal stain is found in

a) Cat

b) Fowl

c) Rat

d) Cow

Answer – a) Cat

Ques 9. Who among the following has devised the Starch-Iodine test to determine the presence of semen?

a) Willott

b) E.M. Southern

c) Roberts

d) Ouchterlong

Answer – c) Roberts

Ques 10. Confirmation of menstrual blood stain is done by the following method:

a) Isoenzyme Marker

b) Fibrin Degradation Product (FDP)

c) Protein Marker

d) Restriction Enzymes

Answer – b) Fibrin Degradation Product (FDP)